Spectrophotometric methods for the determination of fluoride ion using indole-3-acetic acid interaction with iron(III)

Unal E. I., KENAR A., Aksu M. L., TAŞTEKİN M.

TURKISH JOURNAL OF CHEMISTRY, cilt.43, sa.2, ss.415-423, 2019 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 2
  • Basım Tarihi: 2019
  • Doi Numarası: 10.3906/kim-1807-135
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.415-423
  • Anahtar Kelimeler: Fe(III) indole-3-acetic acid complex, fluoride, spectrophotometric method, SELECTIVE ELECTRODE, AQUEOUS SAMPLES, RAPID METHOD, WATER, SPECTROMETRY, COMPLEX, COAL
  • Gazi Üniversitesi Adresli: Evet

Özet

This study is related to the determination of fluoride ion by the conversion of pink-colored Fe(III) and indole-3-acetic acid (IAA) into a colorless hexafluoride ferrite complex with the addition of fluoride. The optimum conditions of the complex formation were found to be pH 1.7 and a temperature of 60 degrees C. The maximum absorption wavelength of the complex and the detection limit of the method were 525 nm and 0.26 mg/L, respectively. The interfering effects of the different cations (Ag+, Al3+, Ba2+, Ca2+, Cd2+, Co2+, Cu2+, K+, Mg2+, Na+, Ni2+, Pb2+) and anions (SO42-, SO32-, NO2-, I-, Br-, Cl-, SCN-, CH3COO-, H2PO4-, ClO4-) were also investigated. The method was applied to standard and real samples and the resulting data were statistically compared at a confidence level of 95% with those obtained with the use of a fluoride-selective electrode.